I found this and wondered what others think of the deal. It looks like a good deal to me.
Fantasea FP7000 Housing for Nikon Coolpix P7000
Fantasea FP7000 Housing for Nikon Coolpix P7000
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A good deal, but the camera in this deal is a refurbished (by Nikon) camera, although it does carry a 'new' camera warranty from Nikon.
For $100 more you can get the Coolpix P7100 new, not refurbed and the Fantasea FP7100 housing.
Something to keep in mind - the P7000 was replaced by the P7100, which has been replaced by the P7700. So the P7000 is a couple of generations old.